US11404501B2ActiveUtilityA1

Display unit and electronic apparatus

45
Assignee: JOLED INCPriority: May 30, 2016Filed: Apr 20, 2017Granted: Aug 2, 2022
Est. expiryMay 30, 2036(~9.9 yrs left)· nominal 20-yr term from priority
H10K 59/878H10K 59/122G09F 9/30H05B 33/12G09G 3/3233G09G 3/3266H05B 33/24H05B 33/22H01L 27/3246H01L 27/3211H01L 51/5271G09F 9/301H10K 59/35H10K 50/856
45
PatentIndex Score
0
Cited by
25
References
15
Claims

Abstract

A display unit is provided with a plurality of pixels that are two-dimensionally arranged and each include an organic electroluminescence element emitting light of one of a plurality of colors. The pixels are arranged along one direction for each of light emission colors. The pixels each include a first insulating film, a second insulating film, and an organic layer. The first insulating film has openings for the respective pixels. The second insulating film extends along the arrangement direction for each of the light emission colors, in a region between pixels of different light emission colors, out of the plurality of pixels, on the first insulating film. The organic layer is formed in each of the openings, and includes a light-emitting layer. The first insulating film includes a recess that connects together the openings of pixels of the same light emission color, out of the plurality of pixels.

Claims

exact text as granted — not AI-modified
The invention claimed is: 
     
       1. A display unit provided with a plurality of pixels that are two- dimensionally arranged and each include an organic electroluminescence element emitting light of one of a plurality of colors,
 the pixels being arranged along one direction for each of light emission colors, and 
 the pixels each comprising:
 a first insulating film having openings for the respective pixels; 
 a second insulating film extending along the one direction for each of the light emission colors, in a region between pixels of different light emission colors, out of the plurality of pixels, on the first insulating film; and 
 an organic layer formed in each of the openings and including a light-emitting layer, 
 
 the first insulating film including a recess that connects together the openings of pixels of same light emission color, out of the plurality of pixels, wherein 
 the recess includes a side surface tapered with respect to a cross direction, perpendicular to the one direction and parallel to a top-most surface of the first insulating film, to define a first taper angle, 
 said each of the openings includes a side surface tapered with respect to the cross direction to define a second taper angle, and 
 the first taper angle of the side surface of the recess is smaller than the second taper angle of the side surface of said each of the openings. 
 
     
     
       2. The display unit according to  claim 1 , wherein a contact angle on a surface of the recess is smaller than a contact angle on an upper surface of the second insulating film. 
     
     
       3. The display unit according to  claim 1 , wherein the recess is formed in a region between pixels that are adjacent in the one direction for each of the light emission colors. 
     
     
       4. The display unit according to  claim 1 , wherein the second insulating film has a liquid-repellent property. 
     
     
       5. The display unit according to  claim 1 , wherein the first insulating film and the second insulating film are integrally provided, and the second insulating film constitutes a projection on the first insulating film. 
     
     
       6. The display unit according to  claim 5 , wherein a selective part, of the first insulating film, corresponding to the projection has a liquid-repellent property. 
     
     
       7. The display unit according to  claim 1 , wherein the first insulating film has a thickness in a bottom of the recess. 
     
     
       8. The display unit according to  claim 1 , wherein the openings each include a plurality of sub-openings, and the plurality of sub-openings are each provided to extend along the one direction. 
     
     
       9. The display unit according to  claim 1 , wherein the openings each include a reflector. 
     
     
       10. The display unit according to  claim 1 , wherein the recess has a width, in the cross direction crossing the one direction, greater than that of each of the openings. 
     
     
       11. The display unit according to  claim 1 , further comprising:
 a plurality of recesses including the recess, wherein 
 said each of the openings of the pixels of same light emission color includes a plurality of sub-openings adjacent to each other in the cross direction and extending along the one direction between adjacent recesses of the plurality of recesses. 
 
     
     
       12. An electronic apparatus comprising a display unit,
 the display unit provided with a plurality of pixels that are two-dimensionally arranged and each include an organic electroluminescence element emitting light of one of a plurality of colors, 
 the pixels being arranged along one direction for each of light emission colors, and 
 the pixels each including
 a first insulating film having openings for the respective pixels, 
 a second insulating film extending along the one direction for each of the light emission colors, in a region between pixels of different light emission colors, out of the plurality of pixels, on the first insulating film, and 
 an organic layer formed in each of the openings and including a light-emitting layer, 
 
 the first insulating film including a recess that connects together the openings of pixels of same light emission color, out of the plurality of pixels, wherein 
 the recess includes a side surface tapered with respect to a cross direction, perpendicular to the one direction and parallel to a top-most surface of the first insulating film, to define a first taper angle, 
 said each of the openings includes a side surface tapered with respect to the cross direction to define a second taper angle, and 
 the first taper angle of the side surface of the recess is smaller than the second taper angle of the side surface of said each of the openings. 
 
     
     
       13. An electronic apparatus comprising a display unit,
 the display unit provided with a plurality of pixels that are two-dimensionally arranged and each include a light-emitting element emitting light of one of a plurality of colors, 
 the pixels being arranged along one direction for each of light emission colors, and 
 the pixels each including
 a first insulating film having openings for the respective pixels, 
 a second insulating film extending along the one direction for each of the light emission colors, in a region between pixels of different light emission colors, out of the plurality of pixels, on the first insulating film, and 
 a light-emitting layer formed in each of the openings, 
 
 the first insulating film including a recess that connects together the openings of pixels of same light emission color, out of the plurality of pixels, wherein 
 the recess includes a side surface tapered with respect to a cross direction, perpendicular to the one direction and parallel to a top-most surface of the first insulating film, to define a first taper angle, 
 said each of the openings includes a side surface tapered with respect to the cross direction to define a second taper angle, and 
 the first taper angle of the side surface of the recess is smaller than the second taper angle of the side surface of each of the openings. 
 
     
     
       14. The electronic apparatus according to  claim 12 , wherein the recess has a width, in the cross direction crossing the one direction, greater than that of each of the openings. 
     
     
       15. The electronic apparatus according to  claim 13 , further comprising:
 a plurality of recesses including the recess, wherein 
 said each of the openings of the pixels of same light emission color includes a plurality of sub-openings adjacent to each other in the cross direction and extending along the one direction between adjacent recesses of the plurality of recesses.

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